Explain clearly..

. Question 38 0 out of 2 po Consider the following random variable, x, where x = The number of defective parts produced by a piece of machinery per hour when defects occur at a rate of 2 per hour.Compute the probability of the machine produces exactly 4 defective parts in a randomly chosen hour. Selected Answer: 2 Correct Answer: 0.09 Answer range +/- 0.01 (0.08 - 0.10) Question 39 0 out of 2 Consider the following random variable, x, where x = The number of defective parts produced by a piece of machinery per hour when defects occur at a rate of 2 per hour. Compute the probability of the machine produces at least 4 defective parts in a randomly chosen hour. Selected Answer: 6 2 Correct Answer: 0.053 Answer range +/- 0.001 (0.052 - 0.054) . Question 40 0 out of Consider the following random variable, x, where x = The number of students out of a sample of 6 who were accepted into Harvard, given that Harvard has an acceptance rate of 15%. Compute the probability that exactly 3 students are accepted into Harvard. Selected Answer: 6 0.85 Correct Answer: 0.037 Answer range +/- 0.002 (0.035 - 0.039)